mfib_table.h File Reference

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Data Structures
struct	mfib_table_t_
	A protocol Independent IP multicast FIB table. More...

Macros
#define	MFIB_TABLE_N_LOCKS   (MFIB_N_SOURCES+1)
	Keep a lock per-source and a total. More...
#define	MFIB_TABLE_TOTAL_LOCKS   MFIB_N_SOURCES

Typedefs
typedef struct mfib_table_t_	mfib_table_t
	A protocol Independent IP multicast FIB table. More...
typedef int(*	mfib_table_walk_fn_t) (fib_node_index_t fei, void *ctx)
	Call back function when walking entries in a FIB table. More...

Functions
u8 *	format_mfib_table_name (u8 *s, va_list *ap)
	Format the description/name of the table. More...
fib_node_index_t	mfib_table_lookup (u32 fib_index, const mfib_prefix_t *prefix)
	Perfom a longest prefix match in the non-forwarding table. More...
fib_node_index_t	mfib_table_lookup_exact_match (u32 fib_index, const mfib_prefix_t *prefix)
	Perfom an exact match in the non-forwarding table. More...
fib_node_index_t	mfib_table_entry_update (u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, fib_rpf_id_t rpf_id, mfib_entry_flags_t flags)
	Add a new (with no replication) or lock an existing entry. More...
fib_node_index_t	mfib_table_entry_path_update (u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *rpath, mfib_itf_flags_t flags)
	Add n paths to an entry (aka route) in the FIB. More...
void	mfib_table_entry_path_remove (u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, const fib_route_path_t *paths)
	Remove n paths to an entry (aka route) in the FIB. More...
void	mfib_table_entry_delete (u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source)
	Delete a FIB entry. More...
void	mfib_table_entry_delete_index (fib_node_index_t entry_index, mfib_source_t source)
	Delete a FIB entry. More...
fib_node_index_t	mfib_table_entry_special_add (u32 fib_index, const mfib_prefix_t *prefix, mfib_source_t source, mfib_entry_flags_t flags, index_t rep_dpo)
	Add a 'special' entry to the mFIB that links to the DPO passed A special entry is an entry that the FIB is not expect to resolve via the usual mechanisms (i.e. More...
void	mfib_table_flush (u32 fib_index, fib_protocol_t proto, mfib_source_t source)
	Flush all entries from a table for the source. More...
u32	mfib_table_get_index_for_sw_if_index (fib_protocol_t proto, u32 sw_if_index)
	Get the index of the FIB bound to the interface. More...
u32	mfib_table_get_table_id (u32 fib_index, fib_protocol_t proto)
	Get the Table-ID of the FIB from protocol and index. More...
u32	mfib_table_find (fib_protocol_t proto, u32 table_id)
	Get the index of the FIB for a Table-ID. More...
u32	mfib_table_find_or_create_and_lock (fib_protocol_t proto, u32 table_id, mfib_source_t source)
	Get the index of the FIB for a Table-ID. More...
u32	mfib_table_find_or_create_and_lock_w_name (fib_protocol_t proto, u32 table_id, mfib_source_t source, const u8 *name)
	Get the index of the FIB for a Table-ID. More...
void	mfib_table_unlock (u32 fib_index, fib_protocol_t proto, mfib_source_t source)
	Take a reference counting lock on the table. More...
void	mfib_table_lock (u32 fib_index, fib_protocol_t proto, mfib_source_t source)
	Release a reference counting lock on the table. More...
u32	mfib_table_get_num_entries (u32 fib_index, fib_protocol_t proto)
	Return the number of entries in the FIB added by a given source. More...
fib_node_index_t	mfib_table_get_less_specific (u32 fib_index, const mfib_prefix_t *prefix)
	Get the less specific (covering) prefix. More...
mfib_table_t *	mfib_table_get (fib_node_index_t index, fib_protocol_t proto)
	Get a pointer to a FIB table. More...
void	mfib_table_walk (u32 fib_index, fib_protocol_t proto, mfib_table_walk_fn_t fn, void *ctx)
	Walk all entries in a FIB table N.B: This is NOT safe to deletes. More...
u8 *	format_mfib_table_memory (u8 *s, va_list *args)
	format (display) the memory usage for mfibs More...
u32	mfib_table_get_n_routes (fib_node_index_t index, fib_protocol_t proto)
	To assit UT. More...

Macro Definition Documentation

MFIB_TABLE_N_LOCKS

#define MFIB_TABLE_N_LOCKS   (MFIB_N_SOURCES+1)

Keep a lock per-source and a total.

Definition at line 28 of file mfib_table.h.

MFIB_TABLE_TOTAL_LOCKS

#define MFIB_TABLE_TOTAL_LOCKS   MFIB_N_SOURCES

Definition at line 29 of file mfib_table.h.

Typedef Documentation

mfib_table_t

typedef struct mfib_table_t_ mfib_table_t

A protocol Independent IP multicast FIB table.

mfib_table_walk_fn_t

typedef int(* mfib_table_walk_fn_t) (fib_node_index_t fei, void *ctx)

Call back function when walking entries in a FIB table.

Definition at line 447 of file mfib_table.h.

Function Documentation

format_mfib_table_memory()

u8* format_mfib_table_memory	(	u8 *	s,
		va_list *	args
	)

format (display) the memory usage for mfibs

Definition at line 738 of file mfib_table.c.

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format_mfib_table_name()

u8* format_mfib_table_name	(	u8 *	s,
		va_list *	ap
	)

Format the description/name of the table.

Definition at line 724 of file mfib_table.c.

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mfib_table_entry_delete()

void mfib_table_entry_delete	(	u32	fib_index,
		const mfib_prefix_t *	prefix,
		mfib_source_t	source
	)

Delete a FIB entry.

If the entry has no more sources, then it is removed from the table.

Parameters

fib_index	The index of the FIB
prefix	The prefix for the entry to remove
source	The ID of the client/source adding the entry.

Definition at line 440 of file mfib_table.c.

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mfib_table_entry_delete_index()

void mfib_table_entry_delete_index	(	fib_node_index_t	entry_index,
		mfib_source_t	source
	)

Delete a FIB entry.

If the entry has no more sources, then it is removed from the table.

Parameters

entry_index	The index of the FIB entry
source	The ID of the client/source adding the entry.

Definition at line 464 of file mfib_table.c.

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mfib_table_entry_path_remove()

void mfib_table_entry_path_remove	(	u32	fib_index,
		const mfib_prefix_t *	prefix,
		mfib_source_t	source,
		const fib_route_path_t *	paths
	)

Remove n paths to an entry (aka route) in the FIB.

If this is the entry's last path, then the entry will be removed, unless it has other sources. See the documentation for fib_route_path_t for more descirptions of the path parameters.

Parameters

fib_index	The index of the FIB
prefix	The prefix for the entry to add
source	The ID of the client/source adding the entry.
rpaths	A vector of paths.

Definition at line 329 of file mfib_table.c.

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mfib_table_entry_path_update()

fib_node_index_t mfib_table_entry_path_update	(	u32	fib_index,
		const mfib_prefix_t *	prefix,
		mfib_source_t	source,
		const fib_route_path_t *	rpath,
		mfib_itf_flags_t	flags
	)

Add n paths to an entry (aka route) in the FIB.

If the entry does not exist, it will be created. See the documentation for fib_route_path_t for more descirptions of the path parameters.

Parameters

fib_index	The index of the FIB
prefix	The prefix for the entry to add
source	The ID of the client/source adding the entry.
flags	Flags for the entry.
rpaths	A vector of paths.

Returns

the index of the fib_entry_t that is created (or existed already).

Definition at line 290 of file mfib_table.c.

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mfib_table_entry_special_add()

fib_node_index_t mfib_table_entry_special_add	(	u32	fib_index,
		const mfib_prefix_t *	prefix,
		mfib_source_t	source,
		mfib_entry_flags_t	flags,
		index_t	rep_dpo
	)

Add a 'special' entry to the mFIB that links to the DPO passed A special entry is an entry that the FIB is not expect to resolve via the usual mechanisms (i.e.

recurisve or neighbour adj DB lookup). Instead the client/source provides the index of a replicate DPO to link to.

Parameters

fib_index	The index of the FIB
prefix	The prefix to add
source	The ID of the client/source adding the entry.
flags	Flags for the entry.
rep_dpo	The replicate DPO index to link to.

Returns

the index of the fib_entry_t that is created (or existed already).

Definition at line 372 of file mfib_table.c.

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mfib_table_entry_update()

fib_node_index_t mfib_table_entry_update	(	u32	fib_index,
		const mfib_prefix_t *	prefix,
		mfib_source_t	source,
		fib_rpf_id_t	rpf_id,
		mfib_entry_flags_t	flags
	)

Add a new (with no replication) or lock an existing entry.

Parameters

prefix

The prefix for the entry to add

Returns

the index of the fib_entry_t that is created (or existed already).

Definition at line 235 of file mfib_table.c.

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mfib_table_find()

u32 mfib_table_find	(	fib_protocol_t	proto,
		u32	table_id
	)

Get the index of the FIB for a Table-ID.

This DOES NOT create the FIB if it does not exist.

proto The protocol of the FIB (and thus the entries therein)

Parameters

table-id

The Table-ID

Returns

fib_index The index of the FIB, which may be INVALID.

Definition at line 504 of file mfib_table.c.

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mfib_table_find_or_create_and_lock()

u32 mfib_table_find_or_create_and_lock	(	fib_protocol_t	proto,
		u32	table_id,
		mfib_source_t	source
	)

Get the index of the FIB for a Table-ID.

This DOES create the FIB if it does not exist.

proto The protocol of the FIB (and thus the entries therein)

Parameters

table-id

The Table-ID

Returns

fib_index The index of the FIB

Parameters

source

The ID of the client/source.

Definition at line 562 of file mfib_table.c.

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mfib_table_find_or_create_and_lock_w_name()

u32 mfib_table_find_or_create_and_lock_w_name	(	fib_protocol_t	proto,
		u32	table_id,
		mfib_source_t	source,
		const u8 *	name
	)

Get the index of the FIB for a Table-ID.

This DOES create the FIB if it does not exist.

proto The protocol of the FIB (and thus the entries therein)

Parameters

table-id

The Table-ID

Returns

fib_index The index of the FIB

Parameters

source	The ID of the client/source.
name	The client is choosing the name they want the table to have

Definition at line 571 of file mfib_table.c.

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mfib_table_flush()

void mfib_table_flush	(	u32	fib_index,
		fib_protocol_t	proto,
		mfib_source_t	source
	)

Flush all entries from a table for the source.

Parameters

fib_index

The index of the FIB

proto The protocol of the entries in the table

Parameters

source

the source to flush

Definition at line 611 of file mfib_table.c.

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mfib_table_get()

mfib_table_t* mfib_table_get	(	fib_node_index_t	index,
		fib_protocol_t	proto
	)

Get a pointer to a FIB table.

Definition at line 28 of file mfib_table.c.

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mfib_table_get_index_for_sw_if_index()

u32 mfib_table_get_index_for_sw_if_index	(	fib_protocol_t	proto,
		u32	sw_if_index
	)

Get the index of the FIB bound to the interface.

proto The protocol of the FIB (and thus the entries therein)

Parameters

sw_if_index

The interface index

Returns

fib_index The index of the FIB

Definition at line 476 of file mfib_table.c.

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mfib_table_get_less_specific()

fib_node_index_t mfib_table_get_less_specific	(	u32	fib_index,
		const mfib_prefix_t *	prefix
	)

Get the less specific (covering) prefix.

Parameters

fib_index	The index of the FIB
prefix	The prefix to lookup

Returns

The index of the less specific fib_entry_t.

Definition at line 127 of file mfib_table.c.

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mfib_table_get_n_routes()

u32 mfib_table_get_n_routes	(	fib_node_index_t	index,
		fib_protocol_t	proto
	)

To assit UT.

Definition at line 694 of file mfib_table.c.

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mfib_table_get_num_entries()

u32 mfib_table_get_num_entries	(	u32	fib_index,
		fib_protocol_t	proto
	)

Return the number of entries in the FIB added by a given source.

Parameters

fib_index

The index of the FIB

proto The protocol of the FIB (and thus the entries therein)

Returns

number of sourced entries.

mfib_table_get_table_id()

u32 mfib_table_get_table_id	(	u32	fib_index,
		fib_protocol_t	proto
	)

Get the Table-ID of the FIB from protocol and index.

Parameters

fib_index

The FIB index

proto The protocol of the FIB (and thus the entries therein)

Returns

fib_index The tableID of the FIB

Definition at line 493 of file mfib_table.c.

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mfib_table_lock()

void mfib_table_lock	(	u32	fib_index,
		fib_protocol_t	proto,
		mfib_source_t	source
	)

Release a reference counting lock on the table.

When the last lock has gone. the FIB is deleted.

Parameters

fib_index

The index of the FIB

proto The protocol of the FIB (and thus the entries therein)

Parameters

source

The ID of the client/source.

Definition at line 682 of file mfib_table.c.

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mfib_table_lookup()

fib_node_index_t mfib_table_lookup	(	u32	fib_index,
		const mfib_prefix_t *	prefix
	)

Perfom a longest prefix match in the non-forwarding table.

Parameters

fib_index	The index of the FIB
prefix	The prefix to lookup

Returns

The index of the fib_entry_t for the best match, which may be the default route

Definition at line 67 of file mfib_table.c.

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mfib_table_lookup_exact_match()

fib_node_index_t mfib_table_lookup_exact_match	(	u32	fib_index,
		const mfib_prefix_t *	prefix
	)

Perfom an exact match in the non-forwarding table.

Parameters

fib_index	The index of the FIB
prefix	The prefix to lookup

Returns

The index of the fib_entry_t for the exact match, or INVALID is there is no match.

Definition at line 96 of file mfib_table.c.

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mfib_table_unlock()

void mfib_table_unlock	(	u32	fib_index,
		fib_protocol_t	proto,
		mfib_source_t	source
	)

Take a reference counting lock on the table.

Parameters

fib_index

The index of the FIB

proto The protocol of the FIB (and thus the entries therein)

Parameters

source

The ID of the client/source.

Definition at line 653 of file mfib_table.c.

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mfib_table_walk()

void mfib_table_walk	(	u32	fib_index,
		fib_protocol_t	proto,
		mfib_table_walk_fn_t	fn,
		void *	ctx
	)

Walk all entries in a FIB table N.B: This is NOT safe to deletes.

If you need to delete, walk the whole table and store elements in a vector, then delete the elements

Definition at line 705 of file mfib_table.c.

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